<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        body{
            background-color: rgba(0,0,0,0.5);
            margin:0;
            padding:0;
            overflow: hidden;
        }
        @keyframes App-logo-spin {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }
        .logo{
            animation: App-logo-spin infinite 3s linear;
        }
    </style>
</head>
<body>
<img src="logo.svg" width="64" height="64" class="logo" alt="loading..."/>
</body>
</html>
